pi-sdr
Raspberry Pi 2 or 3 8Gb image, running rtl-sdr
This project will enable anyone with a Raspberry Pi to get a visual representation of Radio Frequencies (RF), using Software Defined Radio (SDR) principles - all this contained in a compressed 8Gb microSD card image, ready to run.
There is Raspberry Pi image for using Realtek based USB Tv tuner as Software Defined Radio scanner. As a bonus - there is a stripped down version of Raspbian before all of the SDR software was installed and configured.
Instructions on how to do it manually...